[quote=@King Kindred]
There will be no Uchiha massacre, but they will have dwindled in number after many of them were sent to the front lines during the Third Shinobi War.
[/quote]

I've personally had an idea floating around for a while now on an AU of the nardo setting, though with some more subtle differences in mind. Any particular reason the Uchiha get wiped out beyond balancing? An idea could be that without Madara the more moderate elements take power within the clan and perhaps even an Uchiha from the era becomes the Second Hokage, thus breaking the idea of lineages at least in Konoha. This could lead them to maintain a large presence as well within the leaf, and a long-standing rivalry with the other founding clans, particularly the Hyuga.